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Problem: Consider the reaction between nitrogen and oxygen gas to form dinitrogen monoxide: 2 N2(g) + O2(g)  →  2 N2O(g), ΔHrxn = + 163.2 kJDetermine the sign of the entropy change for the universe. Is the reaction spontaneous?

FREE Expert Solution

Suniv=Ssys+Ssurr


Step 1Determine ΔSsurr:

Hvap=+163.2 kJmol×103 J1 kJ=163,200 J/mol

T = °C + 273.15 = 25 + 273.15 = 298.15 K

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Problem Details

Consider the reaction between nitrogen and oxygen gas to form dinitrogen monoxide: 2 N2(g) + O2(g)  →  2 N2O(g), ΔHrxn = + 163.2 kJ

Determine the sign of the entropy change for the universe. Is the reaction spontaneous?

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Based on our data, we think this problem is relevant for Professor Ross' class at Itawamba Community College.